A/C Service Station, Connecting For Measuring And Testing

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-- On vehicles with a high-voltage system, switch off (deactivate) the "auxiliary climate control" function. Refer to the Owner's Manual and Infotainment/MMI Operating Manual.

-- Switch off the ignition.

-- Connect the A/C service station to the power supply.

-- Assemble the adapter set and screw to connection on low-pressure side.

-- Connect the quick-release coupling adapter to the charging hoses of the A/C service station (hand wheels not screwed in/hand shut-off valve not open).

-- Switch on the service station and evacuate the charging hoses (only necessary if there is air in charging hoses).

-- Switch off the service station.

-- Remove the cap from the service connection or connection with valve (or remove low-pressure switch and bridge respective electrical connections).

-- Connect the service station via the service connections with the quick-release coupling adapters to the vehicle refrigerant circuit.

-- Install the hand wheel on the quick-release coupling adapters only until valve is definitely open at refrigerant circuit connection (observe pressure gauge, do not strain the valve).

-- Perform the planned tests and measurements.